Draw a diagram of a mature embrryo sac of angiosperm, label its any six parts.

Draw a labelled diagram of mature sperm.

Draw labelled diagram of a mature pollen grain.

Draw well labelled diagram of L.S. of mature ovule of angiosperms

Long Answer Questions Five mark Each QUESTIONS FROM CBSE BOARD EXAMINATIONS : (a) Draw a labelled diagram of the internal structure of a mature embryo sac of an angiosperm. (b) Trace the events that occur in a functional megaspore leading to the development of a matured embryo sac in an angiosperm.

Draw a labelled diagram of a neuron.

Draw the diagram of a mature embryo sac and show its 8 nucleate 7-celled stage. Show the following parts: antipodals, synergids, egg, central cell, polar nuclei.

Draw a diagram of fertilized embryo sac showing zygote and PEN.

Draw labelled diagram of ultrastruture of typical animal cell. Label any six parts and function of each.

LONG ANSWER TYPE QUESTIONS. Draw the diagram of a microsporangium and label its wall parts. Write briefly on role of endothecium.